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Physiology

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GIT

Question
17 out of 19
 

Mixing waves of stomach (LQ)



A Originates in body of stomach

B Originates in fundus of stomach

C Originates at incisuraangularis

D Originates in any part of stomach

Ans. A Originates in body of stomach

I. Mixing: wave of stomach:when the stomach contains food, weak peristaltic constrictor waves, called mixing waves, begin in the mid portion of stomach wall and move towards the antrum along the stomach wall about once every 15 to 20 seconds.

II. Peristalsis begins in the lower portion of the body, mixing and grinding. the food and permitting small, semiliquid portions of it to pass through pylorus and enter the duodenum.

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